Those few who are are gems but there are far more wannabee's than those kinds of investors.

But he would start with assets where he finds hidden intrinsic value.

And as was stated earlier, you have the condition of the house that is hidden with the trash that may throw a monkey wrench in the works.

more gems @Agus Hartono thanks!

What are other parameters that I should filter my list to so I dive deeper to find those hidden gems?

It would be fun to send that gem to the police . . .

.:)Hey, how do you find the pro form group, it's hidden, where is it?

Issues requiring investigation are often found due to some other aspect and there is no check list addressing these dormant or hidden matters as you need to recognize them, the potential for loss or need for additional attention.

HOWEVER, in Atlanta anyway, there are scores of these unscrupulous Wholesalers that use non-standard PSAs and think that if the Buyer initials each page, including the page with the double closing terms inserted/hidden, they are "adequately" disclosing.  

Defects in the good or service may be hidden from the buyer, and only known to the seller.A common way that information asymmetry between seller and buyer has been addressed is through a legally-binding warranty, such as a guarantee of satisfaction.